medium5.7
CVE-2026-26931
Metricbeat Allocates Memory with Excessive Size Value Leading to Denial of Service
Impact
Memory Allocation with Excessive Size Value (CWE-789) in the Prometheus remote_write HTTP handler in Metricbeat can lead Denial of Service via Excessive Allocation (CAPEC-130).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/elastic/beats/v7 | < 7.0.0-alpha2.0.20260112100137-de072c4e371e | 7.0.0-alpha2.0.20260112100137-de072c4e371e |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Elastic | Metricbeat | from 8.0.0 before 8.19.13 from 9.0.0 before 9.2.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-security-update-esa-2026-09/385532
- https://github.com/advisories/GHSA-5vrw-qjxw-89r5
- https://nvd.nist.gov/vuln/detail/CVE-2026-26931
- https://github.com/elastic/beats/commit/de072c4e371eafeb2a42d65b9ad513f666e4ffd7